package com.example.messagequeue.mqserver.core;import lombok.Data;/** * 绑定对象 */@Datapublic class Binding {    //交换机的唯一标识    private String exchangeName;    //队列的唯一标识    private String queueName;    //bindingKey,如果交换机类型为 Direct，则bindingKey为队列的身份标识    private String bindingKey;    //所在的虚拟主机名    private String vName;}